diff --git a/sys-apps/dnf5/dnf5-5.2.5.0.ebuild b/sys-apps/dnf5/dnf5-5.2.5.0.ebuild
index d71c95a77f..b82d74f452 100644
--- a/sys-apps/dnf5/dnf5-5.2.5.0.ebuild
+++ b/sys-apps/dnf5/dnf5-5.2.5.0.ebuild
@@ -54,6 +54,8 @@ src_prepare() {
 	cmake_src_prepare
 	# Replace hardcoded TMPDIR.
 	sed -i "s|/tmp/|${T}/|" test/libdnf5/utils/test_fs.cpp || die
+	# remove -Werror{,=unused-result}; bug 936870
+	sed 's/-Werror[^[:space:])]*//' -i CMakeLists.txt || die
 }
 
 src_configure() {